From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B908C4167B for ; Mon, 4 Dec 2023 14:33:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345270AbjLDOdI (ORCPT ); Mon, 4 Dec 2023 09:33:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231801AbjLDOc4 (ORCPT ); Mon, 4 Dec 2023 09:32:56 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E46A526B9 for ; Mon, 4 Dec 2023 06:32:02 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6DE00C433C7; Mon, 4 Dec 2023 14:32:00 +0000 (UTC) Message-ID: Date: Mon, 4 Dec 2023 15:31:59 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 13/36] media: ti: j721e-csi2rx: Remove useless setting of min_buffers_needed Content-Language: en-US, nl To: Benjamin Gaignard , mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com, matt.ranostay@konsulko.com Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-staging@lists.linux.dev, kernel@collabora.com, Jai Luthra References: <20231204132323.22811-1-benjamin.gaignard@collabora.com> <20231204132323.22811-14-benjamin.gaignard@collabora.com> From: Hans Verkuil Autocrypt: addr=hverkuil@xs4all.nl; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/12/2023 14:23, Benjamin Gaignard wrote: > This driver uses min_buffers_needed which vb2 uses to ensure > start_streaming is called when at least 'min_buffers_needed' > buffers are queued. However, this driver doesn't need this, > it can stream fine without any buffers queued. > Just drop this unnecessary restriction. > > Signed-off-by: Benjamin Gaignard > CC: Jai Luthra > --- > drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c > index ada61391c8d2..1e5f68f50afb 100644 > --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c > +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c > @@ -873,7 +873,6 @@ static int ti_csi2rx_init_vb2q(struct ti_csi2rx_dev *csi) > q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; > q->dev = dmaengine_get_dma_device(csi->dma.chan); > q->lock = &csi->mutex; > - q->min_buffers_needed = 1; > > ret = vb2_queue_init(q); > if (ret) Drop this patch, this is needed. Regards, Hans